@incollection {schmundt2000, title = {Optical leaf growth analysis}, year = {2000}, pages = {640-641}, publisher = {Academic Press}, chapter = {A16}, author = {Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne}, editor = {Hau\DFecker, H.} } @incollection {kuemmerlen2000, title = {Thermography to measure water relations of plant leaves}, year = {2000}, pages = {636--637}, publisher = {Academic Press}, chapter = {A14}, author = {Bernd K{\"u}mmerlen and Stefan Dauwe and Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Horst Hau{\ss}ecker} } @phdthesis {schmundt1999, title = {Development of an Optical Flow Based System for the Precise Measurement of Plant Growth}, year = {1999}, publisher = {IWR, Fakult{\"a}t f{\"u}r Physik und Astronomie, Univ.\ Heidelberg}, author = {Dominik Schmund} } @incollection {schmundt1999a, title = {Plant-leaf growth studied by image sequence analysis}, volume = {3: Systems and Applications}, year = {1999}, pages = {719-735}, publisher = {Academic Press}, chapter = {33}, author = {Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler} } @incollection {kuemmerlen1999, title = {Thermography to measure water relations of plant leaves}, volume = {3: Systems and Applications}, year = {1999}, pages = {763-781}, publisher = {Academic Press}, chapter = {36}, author = {Bernd K{\"u}mmerlen and Stefan Dauwe and Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker} } @article {schmundt1998, title = {Quantitative analysis of the local rates of growth of dicot leaves at a high temporal and spatial resolution, using image sequence analysis}, journal = {Plant Journal}, volume = {16}, year = {1998}, pages = {505--514}, abstract = {A new technique is presented for quantitative mapping of dicot leaf growth at high spatial and temporal resolution, at a speed making online-mapping feasible. Time lapse video sequences of growing leaves are captured by a personal computer (PC) with a frame-grabber board and a standard CCD camera, and evaluated using algorithms that have been recently developed to analyse motion in dynamic image sequences. Growth can be detected at under 1\% per hour, with a time resolution of minutes and a spatial resolution of a few millimeters. The new technique has been verified by comparing it with classical approaches to map integrated growth. Diurnal courses of leaf growth of Ricinus communis and tobacco are presented to demonstrate the localised character of growth in leaves. Expansion growth is restricted to the base of the leaf and is restricted to a few hours at the end of the night and the start of the day. The high resolution of the method is illustrated by mapping the responses to step-changes in leaf turgor. A 3 bar turgor jump led to a rapid transient expansion over the entire length of the leaf that was partially reversed when the turgor was relaxed.}, doi = {10.1046/j.1365-313x.1998.00314.x}, author = {Dominik Schmund and Mark Stitt and Bernd J{\"a}hne and Ulrich Schurr} } @conference {jaehne1998b, title = {Study of dynamical processes with tensor-based spatiotemporal image processing techniques}, booktitle = {ECCV 1998}, volume = {1407}, year = {1998}, pages = {322--336}, publisher = {Springer}, organization = {Springer}, abstract = {Image sequence processing techniques are used to study exchange, growth, and transport processes and to tackle key questions in environmental physics and biology. These applications require high accuracy for the estimation of the motion field since the most interesting parameters of the dynamical processes studied are contained in first-order derivatives of the motion field or in dynamical changes of the moving objects. Therefore the performance and optimization of low-level motion estimators is discussed. A tensor method tuned with carefully optimized derivative filters yields reliable and dense displacement vector fields (DVF) with an accuracy of up to a few hundredth pixels/frame for real-world images. The accuracy of the tensor method is verified with computer-generated sequences and a calibrated image sequence. With the improvements in accuracy the motion estimation is now rather limited by imperfections in the CCD sensors, especially the spatial nonuniformity in the responsivity. With a simple two-point calibration, these effects can efficiently be suppressed. The application of the techniques to the analysis of plant growth, to ocean surface microturbulence in IR image sequences, and to sediment transport is demonstrated.}, doi = {10.1007/BFb0054750}, author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Hanno Scharr and Hagen Spies and Dominik Schmund and Ulrich Schurr} } @conference {jaehne1996a, title = {The role of active vision in exploring growth, transport, and exchange processes}, booktitle = {Aktives Sehen in technischen und biologischen Systemen, Workshop der GI-Fachgruppe 1.0.4. Bildverstehen Hamburg, 3--4. December 1996}, volume = {4}, year = {1996}, pages = {194--202}, publisher = {infix}, organization = {infix}, author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Frank Hering and G{\"u}nther Balschbach and J. Klinke and Martin Lell and Dominik Schmund and Michael Schultz and Ulrich Schurr and Mark Stitt and Ulrich Platt}, editor = {B Mertsching} } @article {schurr1996, title = {Structural and functional evidence for xylem-mediated water transport and high tranpiration in Agrobacterium tumefaciens-induced tumors of Ricinus communis}, journal = {Botanica Acta}, volume = {109}, year = {1996}, pages = {405--412}, doi = {10.1111/j.1438-8677.1996.tb00590.x}, author = {Ulrich Schurr and B. Schuberth and R. Aloni and K. S. Pradel and Dominik Schmund and Bernd J{\"a}hne and C. I. Ullrich} } @conference {schmundt1995a, title = {The circular wind wave facilities at the University of Heidelberg}, booktitle = {Air-Water Gas Transfer - Selected papers from the Third International Symposium on Air-Water Gas Transfer}, year = {1995}, pages = {505--516}, publisher = {AEON}, organization = {AEON}, doi = {10.5281/zenodo.10404}, author = {Dominik Schmund and Thomas M{\"u}nsterer and Lauer, H. and Bernd J{\"a}hne and Bernd J{\"a}hne}, editor = {E. C. Monahan} } @mastersthesis {schmundt1995, title = {Voruntersuchung der Einsatzm{\"o}glichkeiten digitaler Bildverarbeitung zur Analyse von Transportvorg{\"a}ngen und Wachstumsprozessen in Pflanzen}, year = {1995}, note = {IUP D-422}, school = {University of Heidelberg}, author = {Dominik Schmund} }